Hot water connections
13
Hot water
connections
All coil connections are to be
made with a threaded joint.
Use specified pipe dope or
thread sealer tape for threaded
connections to the cast bronze
headers. Make sure that the pipe
fitting going into the header is
not over tightened. This may
cause the header to split.
After the connections are
completed, the system should
be tested for leaks. Since
some components are not
designed to hold pressure with
a gas, hydronic systems should
be tested with water. Test
pressure must not exceed 250
psig. Pressure testing should
be completed prior to sheet
rocking, finished floors, painting,
caulking, etc.
All water coils must be protected
from freezing after initial filling
with water. Even if the system is
drained, unit coils may still hold
enough water to cause damage
when exposed to temperatures
below freezing.
In the event that leaking or
defective components are
discovered, the Zehnder Rittling
Sales Representative must be
notified before any repairs are
attempted. All leaks should be
repaired before proceeding with
the installation.
After system integrity has been
established, the piping should
be insulated in accordance with
the project specifications. This is
the responsibility of the installing
or the insulation contractor.
Zehnder Rittling will not accept
any charges associated with
re-insulating piping if the
installing contractor failed to
establish system integrity prior to
insulating.
